"This book explains the conceptual foundations of investing to improve investor performance. There are a host of investment mistakes that can be avoided by such an understanding. One example involves the trade-off between risk and return. The trade-off seems to imply that if you bear more risk you will have higher long-run average returns. That conclusion is false. It is possible to bear a great deal of risk and get no benefit in terms of higher average return. Understanding the conceptual foundations of finance makes it clear why this is so and, thereby, helps an investor avoid bearing uncompensated risks. Another choice every investor has to make is between active versus passive investing. Making that choice wisely requires understanding the conceptual foundations of investing. The Conceptual Foundations of Investing is ultimately for mid-level investors looking to add active elements to their portfolio"--